Rotary motor.



J. K.-BRODERIGK.

' ROTARY MOTOR. APPLIOATION FILED OUT. 27, 1904.

' 2 SHEETS-SHEET 1.

Pic-M;

PATENTED MAR: 27, 1906.

WITNES ES \NVENTQR- QA"WQ@QLQ John liiBvodemck.

J. K. BRODERIGK.

ROTARY MOTOR. APPLIOATVION FILED OUT. 27, 1904.

I PATENTED MAR.27, 1906.

&

WITNESSES .FNVENTORI ATTY's.

2 SHEETS-SHEET 2.

niarrno srArEs PATENT OFFICE.

JOHN K, siioniziucx, or SIT.'LVOUIS, MISSOURI.

I nor/my oToFn Be ityknown that I, John K. Bnonnnicx, a

citizenof.the UnitedStates, residing at St. Louis,'-Mi ssouri, have invented a certain new i 5 and useful Improvement in Rotary ExplosivaMotors; of which the following is a full, clear, and exactgdescriptitm, such as will 'cnable- ,others skillediin the art to which it appertainsfto make and use the same, refer- '10 ence being had to the accompanying drawings, forming part of this specification, in which-- J I .1

Figure 1 is a: cross-sectional. View through an engine constructed in accordance with my [5 invention, the appurtenances thereto ,being shown in elevatlon. Fig. 2; is an enlarged plan view of the rotary piston. Fig. 3 is a cross-sectional view through the piston-cups. Fig. 4 is a detail perspective view of one of 20 the cups, and Fig. 5 is an enlarged fragmentary sectional view through a portion of the rotary piston and the intermediate abut merits.

This invention relates to explosive-motors,

2 5 ,and particularly to a novel construction of piston therefor.

One of the objects of the invention is to providemeans whereby the expanded, gases enterin the explosion cylinder and which have acte upon one series of working faces carried by the piston may be permitted to exert pressurevagainst one or more secondary series of workin faces before being finally exhausted.

Another object is to provide means whereby a minimum resistance-willpbe offered to the exhaustion ofthe utilized gases,,'so that a maximum pressure may be exerted against the Workingfaces of the piston.

, Other objects and .advantages, as well as- 40 thenovel detalls of construction of this in-V vention, will be specifically described herein-I after, it. being understoodthat changes in I c the. form, proportion,and-:minor details .of,

' construction may be; resorted togwithou't; 4'5 parting from thespiritonsacrificingany of the advantagesthereof,,t- I

The preferred embodiment of v my, inverkv tionis-illus rated 111th?! accompanying draw:

nganiw f 4 .l l desi 'nates. a carries the piston 2. The piston 2 is'inclosed ina casing, which casing is illustrated as com- Specification of Letters Patent. g Application filed O ctqter27,;1'9( )4. ScrialNo.230,' 196.

Patented March 27, 1 906.

prising a plate 4, closing one side of the pis ton and forming a'cover for the housing 5. The piston used in connection with this motor'is of peculiar construction and is best illustrated in Figs. 2 to 5. This piston 2-is illustrated as comprisin a dis-k having a pe ripheral flange 8, in whic are packing-rings 9.

Spaced from and concentric with the flange is a plurality of -flanges (desi nated by the, numerals and 11) orrning uid spaces er chambers 13 and 14, The chainbcr 13 is of vious that inasmuch as the fluid enters the space 13 before entering the space 14 the expanded-gas being of greater volume after hav ing passed from the chamber 13 will require a greater area against which to exert its force. The flanges 10 and 11 alternate with similar flanges 15 and 16, carried by the disk "4, comprising part of the housing for the pisand 23, formed in the flanges 8 an 10 of the piston, the floor 24 of the-chamber 13 being provided with grooves to receive the lower edges 19 of the respective cups; This construction will permit the cups to lie close together, so as to-present a maximumsurface to a given volume of expandedgas. The cups '17 in the secondary chamber 14 are similar in construction to. those in the primary chamber 13, except that the cups designated by the of their ends, said cups being larger than those designated by the numeral 17.

less area th'an'the chamber 14, it being ob- 25 des,g'nates the outlet ports or exhausts,

there being anoutlet or exhaust for-each-cup '1-7."I"O ne, wall'of each outlet-port is curved oppositely curved ports 26, formedin stationary abutment" on thev disk 4.I Ports 4 27, similar to those desi'gln mera1'22, are formed in t on theis'ainearc as the curvature of the inner wall of said cup, so thatth'e gas willreadily 7 :pass from the space formed between two sid jacent cups through the ports25 andthrouglh" red ate'dbyv theanu- 3 e flange 11 of thea numeralsfll? are secured only at one of each 7 piston 2, the Walls o1 these ports also being curved on the same are as the curvature of the inner Walls of the cup 17*, and these ports 27 direct the utilized gases through the final exhaust-ports 28 in the flange 1.6, so that they ass into the chamber 29, whence they may lie exhausted int-o atmosphere through the exhaust-pipe 30.

. By reference to Fig. 2 it will he observed that in theconstruction illustrated I prefer to have four inlet-ports communicating with the interior of the motor and in communication With the explosienwhsrhber, which supplies the necessary fluid to operste the piston. These inlet-ports are designated by the numerals 31, 32, 33, and 34, respectively. However, a diiierent number in ey be utilized, if desired. in order that the velocity of the fluid entering the chamber 13 may be utilized to propel thepiston irrespective of its explosive force against the cops 17, I provide the flange 10 for onesixteenth of its circumference iree from perforations. This portion in each instance I have designated by the referencenuinersl 35. The time of the ex plosion in each. explosion-chamber is erren ed relative to the time of closingthe particu er circuit cooperating therewith, so that the gas in each particular chamber will eX-' plode during the time thct both the inlet and outlet ports of the explosion-chamber are closed.

As the abutment 35' is provided on the flange It) for one-sixteenth of its circumference, the gas will not be permitted to escape from the chamber 13 until the piston has made one-sixteenth of a revolution. After this one-sixteenth of e revolution-has been made the gas willreadily pass into a secondar chamber 1.4 to not upon the largeror secon cry cups. The ports 26 in the abutment or flange 10 are curved in e reverse directionto the direction of curvature of the cups 17 and 17, as Well es their exheust-ports 25 and 27, and theobject of this is that during the esscge of the gas from the chamber 18 t0 the chamber. 14 the push ng 'force of the gas will be exerted upon both sets of cups, so as to have s tendency to increase the grower of the moton 'I'f desirable, e third set 01 on 3 may he arranged on the piston 12; but in t ils event said cups would be of larger area, than the cups in the secondary chamber, and the reason for this is obvious.

It will be observed that by the construction of motor illustrated and described by me the gss during? its time of explosion and during the time that it is adapted to exert its expensive force against the cups is held Within the motor in. a most efficient manner. After its Work has been performed 'it will be permitted to speedily exhaust, so es to cvoid'eny tendency toward back pressure, which would im air the eilicienoy of the motor.

sving thus described the invention, whet is claimed as new, and desired to be secured by Letters Patent, is-

1. In it fluidrnotor, c piston having primery cups 17, secondary cups 1?", a. flange at the bottom of the primary cups and provided with outletports, a. flange at the top of the secondary cups end having inlet-ports, and e flenge at the bottom of the secondary cups having outlet-ports; substantially as described.

2. In a motor, at casing, a piston in the cesing comprising a. disk, circumferential flanges on said disk, curved cups attached to one of the flanges, which flange is provided with exhaust-ports curved on the some are as the curvature of the Working faces of the cups, and a second series or cups attached to one of the flanges, and iidjucent exl1m1st-ports in the flange also curved on the some arc as the curvature of those pcriculer cups; substantially as described.

3. In a motor, a casing, a piston in the cesing comprising a disk, circumferential flanges on said disk, curved cups attached to one of the flanges, which flange is provided with exhaust-ports curved on the some are as the curvature of the Working faces of the cu second series of? cups attached to one oflanges, ed'acent exhaust-ports in the flange also curve on thessn'ic are as the curvature of those particular cups, and cbutnients in the casing for dividing the two series of cups, said ebutinents having orts for a portion of their circumference on y; substantially no described.

4. In e-motor, a casing, a, piston in the cus of those particular cups, and ebutnients in the casing for dividing the two series of cups, said abutinents having orts for a, portion of their circumference ony, said ports in the abutments being curved in on opposite directlon to the curvature of the )orts in the piston substantially as described,

5; In a motor, c rotary piston having cups to receive the actuating fluid, which cups are provided with working faces of cycloidal curvature, and exhcust orts in the piston- Wall of each cup nllning with the working face of the cup substantially as described.

6. In a rotary motor, at casing having ported interiorly-crrengcd circular flanges, 5

piston hevin g ported flanges slteri'mting with tile" roe the'fian es of the casing, cups connected at I In testirnony whereof I herennto affirc my their en s to one of the piston-flanges and to signature, in the presence of two Witnesses,

the outer edge of the piston, and cups conthis 21st day of October, 1904. nected at one of each of their ends to one of JOHN BRODERICK.

5 the piston-flanges and free at their 0 "poslte Witnesses:

ends adjacent to one of the casinganges; B. F. FUNK, substantially as described. GEORGE BAKEWELL. 

